Planoi



G. MORTIMER.

LOCKING AND ADJUSTING DEVICE.

APPLICATION FILED MAR. 8, 19m.

1 ,3 1 3,409 Patented Aug. 19, 1919.

III/II 'III/l Tun COLUMBIA PLANOGRAFH cO-, WASHINGTON. D. c.

I UNITED STATES PATENT- FICE;

GEORGE MORTIMER, OE sOMERsE'r, ENGLAND, ASSIGNOR T0 D. NAPIER & soiv, LIMIT-E1), 1 r or LONDON, ENGLAND. I

Looiinve Amp smegma DEv E.

To all 'wkom it may concern:

Be it known that I, GEO G MORTIMER; a subject of the King of England,- and'resldat Somerset, in England, have invented certain new and useful Improvements in "Locking and Adjusting Devices, of' which the following is a specification; This invention relates to locking and adjusting devices and has for its ob ect to enable a member tobe securely locked against rotation with relation to a second member while at the same time permitting adjust ment of the two members to be readily and accurately effected. v

The invention'is particularly applicable as a locking means for two' relatively adjustable members 'which are screwed together, such as brake rods, gages, various parts of internal combustion engines, automobiles, &c.,. and in which parts of this character are subjected to vibration and shock and adjustment is frequently needed. A. particularly useful application of the invention is to that type of valve for internal combustion engines, which comprises a valve spindle screw threaded to a tappet "disk where, due to wearing'of the parts of the valve mechanism adjustment is frequently required to insure the proper seating of the valve. According to this invention a spring member is provided which is keyed or fsiiniflarly connected to one of two members or parts which are relatively adjustable by screwing, the spring member being formed so as to frictionally engage some part ofthe second member in a manner which will prevent relative rotation of the two members until the frictional grip of the spring member is relieved. The invention is simple, inexpensive to manufacture, easily applied, and has numerous advantages over the various devices of this general character which have been heretofore designed and constructed. a V

The invention may-be put into practice in various ways but the accompanying drawings illustrate by way of example the application of the invention to the valve of an internalcombustion engine. In these drawi gsd i Specification of Letters Patent. Application fileii lharchfl, 1913.; Serial no, 2e1,ss'1.

Figure 1 is a longitudinal sectionaleleval Pat nted Aug. 19. 191 9.

tion of a valve withthepresent invention applied to the tappet diskthereof.

Fig. 2 isa plan'or end view of the tappet disk and spring'wash'er as shown in Fig. 1.

Fig. 3 is a sectional elevation of the tappet disk member alone.

Fig. 4 is an elevationv of the end portion of the hollow valve spindle. Y 5

' Fig. 5 is a plan of the same.

Fig. 6 is' a sectional elevation of the spring washer, and

Fig. 7 is a plan of the same; Like letters =jindicat'e-like parts throughout the drawings; r

' The tap'pet disk A is as u'sual' provided witha steinA' which is screw-threaded to engage the correspondingly screw' threaded interior of the hollow valve spindle B. The peripheral portion A of the disk A is formed cylindrical as shown in Fig. 3' the requirements. The spring washeromprises an annular disk part C having on one face and t'owardits periphery a flange 6 thickness of the disk or depth of thi's cy lindrical portion being in accordance with of an internaldiaineter adapted to' e'ngage and frictionally grip thecylindricalzperiph- 'ery A of the 'tappetdisk A. 0n 'the opposite'face of the disk C isaflange G which serves-to inclose the end of the valve'spring which bears against: that face of the disk G. The central'portionof the washeris re cessed as at C and formedwith-acylindrical part0 and a lug G which projects into this cylindrical part; :A' radial cut C 'is made right through the washer from the central' opening. y I 1 1 7 On the end of the hollow valvespindle B is formed a longitudinal slot or recess B adapted to be engaged byv the lug 'C 'fw'hich projects inwardly froin'the central part-of I the washer G. The latter-is'ithus keyed-to the valve spindle B and by 'meansof; its out- '-wardly directed fiange Cf :can'griputhe tappet diskA' and lock it to the-vale spindle. In the face of the tappet disk A; are formed a series of holes-A adapted: to; be

engaged by a suitable tool which 'enablesth'e disk to be rotated-seas to screwthefstem A in or out of the valve spindle B. In order to release the grip of the spring washer on the tappet. disk it is necessary" to expandthe washer" or act on it so as torelease this grip on the disk and this maybe effeeted inwarious ways. For-example a suitable tool may be inserted into the iend. of the radial cut C in the flange C so as I to merely spread this opening 'oi 'spring Preferably, however;

apart the washer. V tool is employed which has a handle zmaa curved arm shaped to lie closely around an arc of the flange C ali o'ok-like or" other pr0jection .being; formed on the end of this arm whijch can be inserted into the opening of the cut C, WVhen this tool is in position in engagement with the washer andthe necessary tool is engaged with the holes A in the tappetdisk A, by exerting circumferentia'l pressure in opposite directions on; the handles of the two tools the grip of the washer C on the disk A isrelieved and the tappet disk A canbe rotated relatively to thevalve'spindle B so as to'effect the desired adjustment in the length of the spindle. As soon as pressure ceasestobe exerted on the tool which is in engagement with, the washer C the tappet disk A will be held by the washer againstrotation relatively to the valve spindle B. The tool which is used to engage the washer is placed; so that it can act on the washer in a clockwise or counterclockwise direction according to but in the opposite direction to that in which it is desired torotate the tappet disk.

1 [As mentioned the washer is so constructed and. arranged that one end of the spring controlling the-valve bears againstthe face of the Washer and through the washer. exerts pressure on the tappet disk: the annulardisk porti0n1C ofi the washe'rlying against the inner face of the t'appetdisk A. If the valve spring breaks the action of thelock mg device is not interfered" with nor is the adjustment of thepart's efl'ected.

Whenassembling theparts difiiculty may This difliculty may however be obviated by makingv a out C through the cylindrical part C of the washer at the side which carries the lug or key. C 3 A part of thiskey is their free to yield slightly relatively to the main part of thewasher in the direction of i the axis of the spindle; The washer C is then first placed in position on the'tappet disk A with theflange C gripping the pe- I ripher'y-A of the disk and the stemrA is now screwed i'ntothe spindle.- If the end portion of the key G comes in contact with the end of the spindle B just before the key comes in line with the recess B this part of the key will yield while the screwing of the-stem into the spindleis continued and as soon'as the recess B and key G coincide the-latter will spring into the recess and the washer will be automatically locked to the spindle. Thus the process of assembling V the parts is greatly simplified as there is no occasion to hold one part relatively to the other but the spring having been put in "placethe tappet disk carrying the washer can be screwedstraight on with the certainty that the washer willbecome keyed to the spindle when the stem A has entered the spindle B. to, therequired extent. The necessaryadjustment in the length of the spindle Tis then effected in the manner describedby relaxing the grip of the washer C on the disk A when the latter can be rotated relatively to the spindle to the extent desirable. I

There maybe combined with the above described device some means which will enable. the extent to which the adjustment is efie'cted to be exactly determined. For examplesome portion of the edge of one of the rotatable members may be marked with 'gradu'ations bearing a definite relation to thenumber of screw-threads to the inch on the stem or equivalent part of this member which is in engagement with, the second member with relation to which the first member is rotatably adjustable. By means of'marks on the periphery of the Washer or springmember or by a ointer or by a suitably arranged part of the second memlber-the marks .on the first member can be read 011'. It thus becomes possible to rotate the two members relatively and set the parts so as to adjust a length to a fraction of an inch and the setting will not be altered when the spring member is released in order to efl'ectthe locking of the parts. As an instance in the case where the in- Vention is applied to the locking of the tappet disk of the valve of an internal combustion engine as illustrated in the drawings the graduations may be arranged in the following manner. The face of the tappet disk i ;A may be provided with graduations around its edgeeas shown in Fig. 2, these graduations bearing a definite relation to the screwthreads on the stem A. Thus if the stem A is threaded. With twenty-five threads to the inch and the disk isv graduated around its edge in-to fortyparts the adjustment in the length of the valve stem can be made to oneten-thousandth of an inch or less by estimation.

The construction of the parts of the rela tively rotatable members as also of the washer or spring member may vary in accordance with the purpose for which the a device or mechanism to which the invention r combination of a m'ember" having a screwwhich ijse'ngaged I by f the projection? of the' first mei nber, and aspiring-member: keyed "to onebf-the said members and formed so isapplied is used and the details of construction' generally may ber'modifiedin" 1 accordance with requirements. I

- What I claim as my invention and desire to secureby Letters Patent is '1. In a locking and adjusting device the combination of a member having a screwthrea'ded part, a second member a portion of which is screw-threaded and engaged by the screw-threaded part of the first member,

and a spring member keyed to one, of the said members and' for-med so as'to frictionallyengage with the'same force at alltimes some part ofthe other of these two members whatever their relative-positions? in" a manner which will prevent relative rota "tion of the two members until thefrictional grip of the spring member is relaxed as set forth. v 2. In a' locking'and adjusting-device the combination of a member having a screwthreaded part and a cylindrical part, a secpart adapted to frictionally engage with the same force atall'times the cylindrical-part of the first member in a mannerwhich' will prevent relative rotation of the two members whatever their relative 'positionsuntil the frictional grip of the spring mem'ber on the first member is relaxed asset-forth;

3. In'a'locking and adjusting device the threaded projection, a secondmember having a hollow internally screw-threaded part asto frictionallyengage with the same force at all times somepart'bfthe' other of these two members whatever 'their relative positlons 1n ajmanner which prevents relative rotation of the two members until-theifric- 'tional grip of the spring member is relaxed as'setforth. a L v 4. 'In' a lockingand adjusting de'vice the combination of a member havingia-screwthreaded projection and a cylindrical-part, asecond member havlng a hollow internally screw-threaded part which is engaged by the projection of the first member, and a spring member keyedrto the-second of the 3 said members'and provided with a cylindrical part adapted to frict'lonally engage 'with the sameforce at-all times the cylindrical part ofthe first member in-a' manner V a 'two memberswhatever theirl relative'"posiwhich will prevent:relativerrotation of the 3 Washer on the: first; 10ft the sald members is relaxed asseflforth; v

tions until the frictional grip ofthe spring i ember on the'firstinember is relaxed as 5;In a locking and adjusting device the combii'1ationof a member having a screW 7 threaded part 'a-s'econdmember a portion of which isscrew-threaded and engaged by the screw-threaded part of the first member, andan annular disk-like member having a central opening so formed as to engage one of the said members in a manner which prevents relative rotation between that member andthe disk like member the latter havv ing also aflange adapted to frictionally: en-

gage with the'sam'e force at all times the other of" the said members whatever their relative positions and a cut extending ra- "dially fromthe'central opening of the disklike memberfto its periphery as set forth. 3 6.1 In 'a locking and adjusting devicethe 'combination of a member having a screw threaded-part, a second member a portion and afwasher with 'a radial cut through-it and having an inwardly directed projection adapted to' engage one of the said members and a flange adapted to frictionally engage the' other of said-"members in a manner :which will prevent'relative rotation of the tWo members" until the frictional grip of the spring memberis relaxed as set forth;

I 7.- In a locking and adjusting device the combination of -'a member having a screwthreaded projection and a cylindrical part, a

secondmember having a hollow internally screw-threaded part which is engaged by of which is screw-threaded andengaged by 1 the screw-threadedpart of the first member,

the-projection ofthe first member, and an annular disk-like member having a central opening-so formed as to engage thesecond of 'the said members ina'manner-which will I prevent relative rotation between that member andthe disk-like member the latterhav. ing also a flange adapted to frictionally e11- gage-the cylindrical part of the nrst of vthe said members and. a cutextendingradially from the central opening of. thedisk-li-ke member to its periphery asset forth.

-8. In a: locking and adjusting device the combination of-a member "havinga screwthreaded proj ection, and; a: I cylindrical part, second member having a hollow internally,

screw-threaded part which is engaged by the =projectioniof; the first member, and a washer with a radial cut through it and ha'vfrictionally engagethe cylindrical part of the first of theisaid members in a manner which willaprevent relative rotation ofthe two members until-the frictional" grip of the ing an inwardly directed projection adapted to engage: the hollow internally screwthreadedpart of the second of the said meml fibers and=-l1a-ving"also"a flange adapted to recessed end'part of'the-second of .thefsaid:

threaded part, a second member a portion of which is screw-threaded and engaged b'ythe 'screw-threadedpart of the first} member, and a washer with'aradial .cut through ii; and having an inwardlyv directed projection forming a key whichcah yield slightly inthe direction-of the axis ofthe said; engaging members and is adapted .tofeng age one or these members the washer having. also; a flange adapted tov frictionally engage the other of the said members in a manner which will prevent .relative,rotation ofthe two. members until the frictional gripof, the v washer'is relaxed as'fset forth-J IO In a locking and adjusting the combination of a member having-asorewthreaded projection and a; cylindrical part,

a second member having a-hollowinter'nally screw-threaded part which isv engaged by the projection of the'first member the .end;of the hollow part of thisseco'nd member being recessed, and a'washe'nwitlr radial? cut through it and having an inwardly directed .tive rotation of the two members untilthe frictional gripof the washer onthe first of thesaid members is relaxedas set vforth. '11...In a locking. andadjusting device the combination of a member having a screwthreaded part and a cylindrical part, a sec- 0nd member a portion of which immethreaded and engaged by the screw-threaded part of the first member? the end of the screw-threaded portion ofthe second memher. being recessedyand an annular disk-like member having a central opening-.wlth a projection directed into this opening and constituting a key adapted: to engage the members 1 and having a flange adaptedto frictionally engage the cylindrical part of from thecentral opening thereln touts pe-I the first of the said members the disk-like member having also a cut extending radially riphery as et; f

12,111 a locking and adjusting device the combination of a member having a screwthreaded part, a second member aportion of which is screw-threaded an'd engaged by the screw-threaded part ofithe first member I the end of the screw-threaded portion lot this second member being recessed, and a washer with a radial cutthrough iti'andhaving an inwardly directed proj ection" formiir -:a key in which is a cut extending throught "94pmje'ction in ,a direction approximately; parah l'e'l to the face orths washn sothat apart relaxed a's-set forth. 9

ofsthe key an ,yield slightly thedirection of the axis of the said engaging members and spring into enigagemerit-withthe recessed end. part oftlie .se'cond ofjthese members the washer'ghaving also a flange 1 adapted; to frict ionally engage the first of these members in ai.n1anner;-which will pre- ;vent relative. rotation; of the two members until; the frictional grip of relaxed as. Set forth the washer is .13; In a lockingand adj threaded. vprojection andj a cylindrical part, a second member having ahollow internally screw-threaded part :which isengaged by. the projection of the first member the end of the -;hollow part of this second member being recessed, anda washen with a radial cut through it and having an inwardly directed projection; forming-a key in which,

is abut extending through .th e.,p-rojection in a direction approximately parallelto the face of the'washer soithatapart of thekey can yield-slightl in the .directionof the axis" of the ear engaging im'embers and 7 spring into engagement with the recessed 'endfpart of the second of these members the washer having also a flange adapted to frictionally engage the cylindrical part ofthe first of the said members in a manner i which y will prevent relative rotation of the two 'members until the frictional. grip of the washer ,on the firstf of the said members is relaxed as set forth.

- 145111 al locking and adjusting the combinationof a member havinga diskdike headprovidediwith a cylindrical partand-a screw threa'ded projection extending from thecenter of the head a second member having an T internally. screw-threaded tubular. portion which isengaged' by the projection of the. first member the-end of the-tubular portion being recessed, and a washer with a radialcutthrouglrcit and having. an inwardly directed zpr ojectionwadapted to engagerthe reoessediend of the tubular-portion 1 of the. second. of thefsaid -me1nber's and; havingalso 'aflange adapted tofrictionally engage-the cylindrical partof the head of the first of the said members ina manner which will prevent relative rotation. of the two washer .on the :firstof the said members. is

'15. In a 'locking and ad usting device the combination of a member having a disk-like I head prfovided' with-acylin'drical. art and a iscrew? hreaded projection exten mg jfrom the center-1 of the head; a second memb'er hav- -l L an internally screw-threaded tubular portion which is engaged; by. the projection v"of the first' memberathe. end of the tubular portion;- being "recessed; and; a washer with a radial cut through it and having-angim usting device the .comblnation. of a memberha'ving a screw- -memb'ers until the-frictional gripof the wardly directed projection forming a key in which is a cut extending through the projection in a direction approximately parallel to the face of the washer so that part, of the key can yield, slightly in the direction of the axis of the sald engaging members and 7 spring into engagement with the recessed end of the tubular portion ofthe second of the said members the washer having also a flange adapted to frictionally enga e the cylindrical part of the head of the t of the said members in a manner which will Copies of this patent may be obtained for GEORGE MORTIMER.

Witnesses:

ELIZABETH SARAH SoARLETr, VIOLET MIBRIAM WRIGHT.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0 

